EP0055095B1 - Sicherung gegen Drehen für Gewindemutter - Google Patents

Sicherung gegen Drehen für Gewindemutter Download PDF

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Publication number
EP0055095B1
EP0055095B1 EP81305950A EP81305950A EP0055095B1 EP 0055095 B1 EP0055095 B1 EP 0055095B1 EP 81305950 A EP81305950 A EP 81305950A EP 81305950 A EP81305950 A EP 81305950A EP 0055095 B1 EP0055095 B1 EP 0055095B1
Authority
EP
European Patent Office
Prior art keywords
nut
spring
recess
rotation
bore
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81305950A
Other languages
English (en)
French (fr)
Other versions
EP0055095A1 (de
Inventor
Roger Anthony Lacey
Edward James Arnold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Parsons Controls Ltd
Original Assignee
Parsons Controls Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Parsons Controls Ltd filed Critical Parsons Controls Ltd
Priority to AT81305950T priority Critical patent/ATE19139T1/de
Publication of EP0055095A1 publication Critical patent/EP0055095A1/de
Application granted granted Critical
Publication of EP0055095B1 publication Critical patent/EP0055095B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F16B39/20—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of steel wire or the like

Definitions

  • This invention relates to nuts having threaded bores and rotation restraint means therefor and, more particularly, to rotation restraint means for use in conjunction with a locating nut on a wire wound conduit of a control cable.
  • a nut having a threaded bore to co-act with an externally threaded member and having rotation restraint means comprising a coiled wire spring with a pitch and diameter corresponding to the thread of the bore, adapted to stiffly engage the thread convolutions of the member and to drivingly engage the nut and having end lengths of the wire bent out to extend radially outwards, the appropriate operation of which tends to unwind or loosen the spring.
  • operation of the end lengths of the wire is either by hand or using a tool, which detracts from the convenience of the device.
  • the nut has a recess formed in register with the threaded bore in an end portion of the nut adjacent an end face, the recess being formed with an inwardly directed lug, said spring being adapted to be accommodated in the recess with the end lengths of the wire respectively engageable with opposed faces of the lug in the recess to apply an unwinding torque to the spring upon rotation of the nut.
  • the locating nut 2 is moulded in acetal resin material provided internally with a bore having a thread form adapted to co-act with, and run freely on, convolutions formed in winding the wire wound conduit. Externally, the nut 2 is formed with a scalloped surface 6 generally co-axial of the bore to permit ease of manual rotation.
  • Adjacent one end face 8 of the nut an end portion of the bore is enlarged to form a recess 10 provided with an inwardly directed lug 12.
  • a slightly less than two-turn coil spring 14 having convolutions adapted stiffly to engage the convolutions formed in winding the wire wound conduit 4 is formed with end lengths 16, 18 of the wire of the spring bent out to extend radially outwards.
  • the spring is first started on the convolutions of the conduit and then the recess 10 in the nut is positioned to encompass the spring and the nut rotated to thread the nut onto the conduit.
  • the lug 12 in the recess bears against the bent out end length 16 of the spring 14 and thus tends to unwind or loosen the spring, thereby facilitating rotation of the spring.
  • the nut and the spring are wound-on along the conduit to a desired location and the rotation force relaxed, whereupon the spring returns to a configuration stiffly engaging the conduit, thereby restraining rotation of the nut arising from, for example, vibration, by interaction between the bent-out end lengths 16, 18 and the lug 12 in the recess.
  • a nut-running machine may be used to apply torque to the nut during an initial threading-on operation. For subsequent adjustments the nut is rotated manually.
  • the torque required to effect rotation is determined by the stiffness of the spring 14 and the number of turns of the spring and that either or both of these may be varied to produce a requisite resistance to rotation of the nut.
  • the nut is formed with an elongation or nosing to fit into an aperture in a bracket or bulkhead.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dowels (AREA)
  • Flexible Shafts (AREA)
  • Springs (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Claims (4)

1. Eine Schraubenmutter (2) mit einer Gewindebohrung, die mit einem Teil (4), der mit einem Außengewinde versehen ist, zusammenwirkt, und die Mittel zur Verhinderung der Verdrehung aufweist, die eine gewundene Drahtfeder (14) mit einer Steigung und einem Durchmesser entsprechend der Schraubenwindung der Bohrung umfaßt, die dazu eingerichtet ist, die Schraubenwindungen des Teiles (4) fest zu umschließen und mit der Schraubenmutter. (2) zusammenzuwirken, und die radial nach außen gerichtete Enden (16, 18) des Drahtes aufweist, wobei deren passende Betätigung die Feder (14) abwinden oder lösen läßt, dadurch gekennzeichnet, daß die Schraubenmutter (2) eine der Gewindebohrung entsprechende Ausnehmung (10) aufweist, die in einem Endteil der Schraubenmutter anschließend an eine Begrenzungsfläche (8) vorgesehen ist, wobei die Ausnehmung einen nach innen gerichteten Ansatz (12) besitzt und die genannte Feder (14) dazu eingerichtet ist, von der Ausnehmung (10) mit den Drahtenden (16, 18) aufgenommen zu werden, die jeweils an den einander gegenüberliegenden Flächen des Ansatzes (12) in der Ausnehmung (10) eingreifen, um beim Verdrehen der Mutter (2) ein abwindendes Drehmoment auf die Feder (14) zu übertragen.
2. Eine Schraubenmutter nach Anspruch 1, wobei die Gewindebohrung dazu eingerichtet ist, mit Windungen, die durch eine Röhre (4) aus gewundenem Draht gebildet sind, zusammenzuwirken und sich frei auf ihnen zu verdrehen.
3. Eine Schraubenmutter nach Anspruch 1 oder 2, wobei die Schraubenmutter aus Kunststoff mit im allgemeinen koaxial zur Bohrung gerippter Oberfläche (6) gebildet ist, um ein Verdrehen der Schraubenmutter mit der Hand zu erleichtern.
4. Eine Schraubenmutter nach einem der verhergehenden Ansprüche, wobei die schraubenförmig gewundene Drahtfeder (14) etwas weniger als zwei Windungen aufweist.
EP81305950A 1980-12-19 1981-12-18 Sicherung gegen Drehen für Gewindemutter Expired EP0055095B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81305950T ATE19139T1 (de) 1980-12-19 1981-12-18 Sicherung gegen drehen fuer gewindemutter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8040842 1980-12-19
GB8040842 1980-12-19

Publications (2)

Publication Number Publication Date
EP0055095A1 EP0055095A1 (de) 1982-06-30
EP0055095B1 true EP0055095B1 (de) 1986-04-09

Family

ID=10518125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81305950A Expired EP0055095B1 (de) 1980-12-19 1981-12-18 Sicherung gegen Drehen für Gewindemutter

Country Status (3)

Country Link
EP (1) EP0055095B1 (de)
AT (1) ATE19139T1 (de)
DE (1) DE3174362D1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE451086B (sv) * 1986-09-10 1987-08-31 Skf Nova Ab Anordning for astadkommande av rotationsbromsning i en skruv- och mutteranordning

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR417017A (fr) * 1909-06-10 1910-11-04 Alexander Nicholson Perfectionnements aux écrous indesserrables
FR702298A (fr) * 1929-12-17 1931-04-03 Dispositif empêchant le desserrage des écrous
US2107550A (en) * 1934-10-22 1938-02-08 Paul C Schmidt Nut lock
US2233889A (en) * 1938-06-20 1941-03-04 Hood James Bruce Screw threaded element
CH204318A (de) * 1938-08-12 1939-04-30 Julius Dipl Ing Jonas Zur Muttersicherung bestimmte Schraubenfeder.
US3565149A (en) * 1969-01-02 1971-02-23 Gen Electric Spring lock

Also Published As

Publication number Publication date
ATE19139T1 (de) 1986-04-15
EP0055095A1 (de) 1982-06-30
DE3174362D1 (en) 1986-05-15

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